@article{01821321, title = {Unit root testing in the presence of innovation variance breaks: a simple solution with increased power.}, journal = {Journal of Applied Mathematics}, volume = {2}, year = {2002}, pages = {233-240}, doi = {10.1155/S1110757X02107029}, zbl = {1107.62358}, language = {en}, url = {http://dml.mathdoc.fr/item/01821321} }
Cook, Steven. Unit root testing in the presence of innovation variance breaks: a simple solution with increased power.. Journal of Applied Mathematics, Tome 2 (2002) pp. 233-240. doi : 10.1155/S1110757X02107029. http://gdmltest.u-ga.fr/item/01821321/